package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 订单
 */
@Service
@Slf4j
public abstract class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;


    /**
     * 用户下单
     *
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况的处理（收货地址为空、购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);

        //查询当前用户的购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());

        //向订单表插入1条数据
        orderMapper.insert(order);

        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }

        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);

        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        //当前登录用户id
        Long userId = BaseContext.getCurrentId();
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
         Map map = new HashMap();
         map.put("type",1);//消息类型，1表示来单
        map.put("orderId",orders.getId());
        map.put("content","订单号:"+outTradeNo);
        //通过WedSocket实现来单提醒，向客户端浏览器推送信息
        webSocketServer.sendToAllclient(JSON.toJSONString(map));
    }

    /**
     * 用户订单分页查询
     *
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult pageQuery4User(int pageNum, int pageSize, Integer status) {
        //设置分页
        PageHelper.startPage(pageNum, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new
                OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        //分页条件查询
        Page<Orders> page =
                orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        //查询出订单明细，并封装入OrderVo进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();//订单id
                //查询订单明细
                List<OrderDetail> orderDetails =
                        orderDetailMapper.getByOrderId(orderId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);

            }
        }
        return new PageResult(page.getTotal(), list);
    }

    /**
     * 查询订单详情
     *
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        //根据id查询订单
        Orders orders = orderMapper.getById(id);
        // 查询该订单对应的菜品套餐明细
        List<OrderDetail> orderDetailList =
                orderDetailMapper.getByOrderId(orders.getId());
        //将该订单及其详情封装到OrderVO并返回
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 用户取消订单
     *
     * @param id
     * @throws Exception
     */
    public void userCancelById(Long id) throws Exception {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        //校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new
                    OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);

        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),

                    new BigDecimal(0.01));
            //支付状态修改为 退款
            orders.setStatus(Orders.REFUND);


        }
        //更新订单状态、取消原因、取消时间
        orders.setStatus(orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     *
     * @param id
     */
    public void repetition(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();
        //根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList =
                orderDetailMapper.getByOrderId(id);

        //将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x ->{
           ShoppingCart shoppingCart = new ShoppingCart();
          //将原订单详情里面的菜品信息重新复制到购物车对象中
          BeanUtils.copyProperties(x,shoppingCart, "id");
          shoppingCart.setUserId(userId);

          shoppingCart.setCreateTime(LocalDateTime.now());
          return  shoppingCart;
        }).collect(Collectors.toList());
        //将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 订单搜索
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO){
        PageHelper.startPage(ordersPageQueryDTO.getPage(),
                ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        //部分订单状态，需要额外返回订单菜品信息，将Orders转化为Oreders
        List<OrderVO> orderVOList = getOrderVOList(page);
        return new PageResult(page.getTotal(),
                orderVOList);

    }


    private List<OrderVO > getOrderVOList(Page<Orders>page) {
        //需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                //将共同字段赋值到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);
                //将订单信息封装到order
                orderVO.setOrderDishes(orderDishes);
                ordersList.add(orderVO);
            }

        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     * @param orders
     * @return
     */
     private String getOrderDishesStr(Orders orders){
         //查询订单菜品详情信息
         List<OrderDetail>  orderDetailList =
                 orderDetailMapper.getByOrderId(orders.getId());
          //将每一个订单菜品信息拼接在一起
         List<String> orderDishList =
                 orderDetailList.stream().map(x ->{
                     String orderDish = x.getName()+ "*" +
                             x.getNumber()+";";
                      return orderDish;
                 }).collect(Collectors.toList());
         return String.join("" , (CharSequence) orderDetailList);
     }

    /**
     * 各个状态的订单数量统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
         //根据状态，分别查询出待接单、待派送，派送中的订单数量
         Integer toBeConfirmed =
                 orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
          Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
          Integer deliveryInProgress =
                  orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
          //将查询出的数据封装到orderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setToBeConfirmed(confirmed);

        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
     }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
Orders orders = Orders.builder()
        .id(ordersConfirmDTO.getId())
        .status(Orders.CONFIRMED)
        .build();
    orderMapper.update(orders);
     }

    /**
     * 拒单
     * @param ordersRejectionDTO
     * @throws Exception
     */
     public void  reject(OrdersRejectionDTO ordersRejectionDTO) throws Exception{
        //根据id查询订单
         Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());
         //订单只有存在且状态为2
         if(ordersDB==null ||!ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
             throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
         }
           //支付状态
             Integer payStatus = ordersDB.getPayStatus();
             if (payStatus == Orders.PAID){
                 //用户已支付，需退款
                 String refund = weChatPayUtil.refund(
                         ordersDB.getNumber(),
                         ordersDB.getNumber(),
                         new BigDecimal(0.01),
                         new BigDecimal(0.01));
                         log.info("申请退款:{}",refund);
             }
             //拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
             Orders orders = new Orders();
             orders.setId(ordersDB.getId());
             orders.setStatus(Orders.CONFIRMED);

             orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
             orders.setCancelTime(LocalDateTime.now());

             orderMapper.update(orders);

         }


    /**
     * 取消订单
     * @param
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        //根据id查询订单
        Orders orders = orderMapper.getById(ordersCancelDTO.getId());
       //支付状态
       Integer payStatus= orders.getPayStatus();
       if (payStatus == 1){
           //用户已支付，需要退款
           String refund = weChatPayUtil.refund(
                   orders.getNumber(),
                   orders.getNumber(),
                   new BigDecimal(0.01),
                   new BigDecimal(0.01));
           log.info("申请退款:{}",refund);
       }
       //管理端取消订单退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders1 = new Orders();
        orders1.setId(ordersCancelDTO.getId());
       orders1.setStatus(Orders.CANCELLED);

       orders.setCancelReason(ordersCancelDTO.getCancelReason());
       orders.setCancelTime(LocalDateTime.now());
       orderMapper.update(orders1);
    }

    /**
     * 派送订单
     *
     * @param id
     */
    public void delivery(Long id){
        //根据id查询dingdan
        Orders ordersty = orderMapper.getById(id);
        //校验订单是否存在，并且状态为3
        if (ordersty == null || ! ordersty.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders =  new Orders();
        orders.setId(ordersty.getId());
        orderMapper.update(ordersty);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id){
       //根据id查询订单
        Orders ordersty = orderMapper.getById(id);
        //校验订单是否存在，并且状态为4
        if (ordersty == null || !ordersty.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
         throw  new
                 OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setStatus(Orders.CONFIRMED);
        orders.setDeliveryTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 用户催单
     *
     * @param id
     */
    public void reminder(Long id){
        //查询订单是否存在
        Orders orders =
                orderMapper.getById(id);
        if (orders == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);

        }
        //基于webSocket实现催单
        Map map  = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号:"+orders.getNumber());
        webSocketServer.sendToAllclient(JSON.toJSONString(map));
    }
//   @Value( "${sky.shop.address}")
     private String shopAddress;

//   @Value("${sky.baidu.ak}")
    private String ak;

    private void checkOutofRange(String address){
       Map map = new HashMap();
       map.put("address",shopAddress);
       map.put("output","json");
        map.put("ak","ak");

        //获取店铺的经纬度坐标
        String shopCoordinate =
                HttpClientUtil.doGet("htpps://api.map.baidu.com/geocding/v3",map);
        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if (!jsonObject.getString("status").equals("0")){
            throw new
                    OrderBusinessException("店铺地址失败");
        }
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬坐标
        String shopLngLat = lat + ","+lng;
        map.put("address",address);
        //获取用户收货地址的坐标
        String userCoordinate =
                HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3",map);
         jsonObject = JSON.parseObject(userCoordinate);
          if (!jsonObject.getString("status").equals("0")){
              throw new OrderBusinessException("收货地址失败");
          }
          //数据解析
          location = jsonObject.getJSONObject("result").getJSONObject("location");
          lat = location.getString("lat");
          lng = location.getString("lng");

          String userLngLat = lat + ","+ lng;

          map.put("origin",shopLngLat);
          map.put("destination",userLngLat);
          map.put("steps_info","0");
          //路线规划
          String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving",map);
          jsonObject = JSON.parseObject(json);
          if (!jsonObject.getString("status").equals("0")){
             throw new OrderBusinessException("配送路线规划失败");
          }
          //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if (distance>5000){
            //配送5公里
            throw new OrderBusinessException("超出配送范围");
        }

    }
}

